KA Tech ICS Polarstar DDMK18 HPA M4

1 reviews

$1,050.00
Color
Engine

Which Polarstar HPA Engine Should You Choose?

All FPS figures are measured with our standard 180mm 6.02 inner barrel and KA Tech's tuned hop-up, bucking, and regulator combination.

Kythera

250–400 FPS · 350 FPS @ ~100 PSI · Semi-auto only

Purely mechanical — no electronics, no full-auto. Just air, BBs, and go, with a realistic trigger pull, break, and reset. Great for training, Milsim, or fields that are hesitant about HPA rifles.

Jack

250–410 FPS · 350 FPS @ ~100 PSI · Up to 50 RPS full-auto

Our entry-level HPA engine. Fast semi-auto with real full-auto capability.

F2

250–440 FPS · 350 FPS @ ~100 PSI · Up to 85 RPS full-auto

The best overall HPA engine on the market — the strongest combination of air efficiency, accuracy, range, consistency, and tune-ability.

Fusion Engine

250–500 FPS · 350 FPS @ ~55 PSI · Up to 75 RPS full-auto

The powerhouse. A clicky tactical trigger board delivers crisp trigger response for players who want the most power out of their rifle.

Our recommendation: First time going HPA? Go with the Fusion Engine. If you're committing real money to get into HPA, go all the way the first time so you're not stuck upgrading piece by piece down the road.

Attachments

Made to order, ships in up to 45 business days

Trade in your rifle any time

Shipping & returns

Backed by KA Tech Warranty
HPA Specialists Since 2022
Trade in anytime — up to 70% back in store credit
3-month labor warranty — you only pay for parts

🔥 KA Tech PolarStar-Powered HPA Rifle – Zero Compromise Performance

Experience what a properly tuned HPA rifle is supposed to feel like. Built by KA Tech and centered around a PolarStar engine, every rifle is configured for maximum consistency, unbeatable trigger response, and laser-straight accuracy—all backed by our structured testing, chrono logging, and alignment checks before it leaves our shop.

Whether you play fast, aggressive CQB or long-range outdoor games, this rifle delivers phenomenal shot quality that stays consistent every single trigger pull. No dips, no hiccups—just smooth, instant air-powered performance.


  • Engine: Comes standard with the PolarStar Kythera but can be optioned with a Jack or F2

  • Consistency: Tight standard deviation thanks to KA Tech air seal optimization

  • Trigger: Precision-tuned speed trigger for effortless semi-auto control

  • Accuracy: Optimized hop-up pairing + inner barrel for predictable flight paths

  • Power: Adjustable PSI for indoor or outdoor field limits

  • Feel: Full Metal, solid, and ready to perform 

Every rifle is tuned for crisp response, low deviation, smooth feeding, and stable FPS.
You will feel the difference immediately.


  • Engine: PolarStar Kythera / Jack / F2

  • Hopup Chamber: Maxx Model CNC aluminum, ICS-spec — M4i Pro with the Kythera or F2, M4Ei with the Jack

  • Bucking: Maple Leaf — SUPER Macron with the Jack, Autobot with the Kythera or F2

  • Inner Barrel: Maple Leaf Crazy Jet 6.02, 250mm 


  • Fully assembled & KA Tech–tuned HPA rifle

  • Chrono-tested with logged deviations

  • Verified nozzle alignment & air-seal optimization

  • Your choice of setup for indoor or outdoor FPS

  • Ready for your tank/reg/line setup

  • Attachments not included unless stated otherwise

Optional Add-Ons:
Tracer unit, battery, FCU battery, airline, regulator, airtank, optic, and more can be added before shipment. 


Every KA Tech HPA rifle is built with zero compromises.
We build it like it’s ours—precision, transparency, and performance you can feel.

Internal Parts

  • HPA Engine: PolarStar Kythera, Jack or F2
  • Hop-Up Chamber: Maxx Model CNC Aluminum Hop-Up Chamber — M4Ei ICS or M4i Pro ICS
  • Bucking: Maple Leaf Autobot Hop-Up Bucking or Maple Leaf SUPER Macron Hop-Up Bucking
  • Inner Barrel: Maple Leaf 6.02mm Airsoft AEG Tightbore Inner Barrel or Maple Leaf Crazy Jet Inner Barrel 6.02

External Parts

  • Base Platform: EMG / Daniel Defense Licensed DDMK18 — Black or Black - Tan Rail or Tan
  • Trigger: Speed Airsoft HPA M4 Tunable Trigger — Blade / Black
  • Optic: EOTECH Airsoft Holographic Optics — 551 / Black
  • Laser / Light: PEQ-15 IR Laser + Visible Red Laser + White LED Flashlight — Red / Black
  • Suppressor: Airsoft Mock Silencer/ Suppressor / Barrel Extension — 110mm / Delta Force / Without Foam

Made to order. We build your airsoft rifle once you order it, so plan for up to 45 business days (most take less). Free shipping over $150.

Need it sooner? Contact us before ordering and we’ll tell you what’s in stock.

Trade in your rifle any time. See our Refund Policy. More in our Shipping Policy.

Every KA Tech airsoft rifle is backed by two layers of coverage:

  • Polarstar Manufacturer Warranty, 1 year, on your Polarstar components.
  • KA Tech Labor Warranty, 3 months. We cover 100% of the labor, you only pay for the replacement part.

Trade in your rifle at any time, for store credit or a cash refund. Like New: 70% store credit or 50% cash. Used at all: 60% store credit or 40% cash. Cancelling before it ships carries a 30% restocking fee.

Full terms on the warranty page, our Refund Policy and our Shipping Policy.

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